MC68HC705JP7CDW Freescale Semiconductor, MC68HC705JP7CDW Datasheet - Page 95

• Manufacturer Part Number: MC68HC705JP7CDW
• Description: IC MCU 8BIT 28-SOIC
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of MC68HC705JP7CDW

• Core Processor: HC05
• Core Size: 8-Bit
• Speed: 2.1MHz
• Connectivity: SIO
• Peripherals: POR, Temp Sensor, WDT
• Number Of I /o: 22
• Program Memory Size: 6KB (6K x 8)
• Program Memory Type: OTP
• Ram Size: 224 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Chapter 9
Simple Synchronous Serial Interface
9.1 Introduction
The simple synchronous serial I/O port (SIOP) subsystem is designed to provide efficient serial
communications with peripheral devices or other MCUs. SIOP is implemented as a 3-wire master/slave
system with serial clock (SCK), serial data input (SDI), and serial data output (SDO). A block diagram of
the SIOP is shown in
Freescale Semiconductor
OSCILLATOR
INTERRUPT
CLOCK
$000A
$000B
SIOP
CPHA
MSTR
SPE
LSBF
SPIR
SPIE
DCOL
SPIF
SPR0
SPR1
MC68HC705JJ7 • MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
÷2
Figure
9-1.
Q
LATCH
DIVIDER
SELECT
CLOCK
AND
S
R
Figure 9-1. SIOP Block Diagram
INTERNAL M68HC05 BUS
CONTROL
CLOCK
$000C
DIN
CLK
COMP
ERROR
(LSB OR MSB FIRST)
FORMAT CONTROL
DATA REGISTER
(SDR)
SIOP
8-BIT SHIFT
REGISTER
DOUT
PORTB LOGIC
PORTB LOGIC
PORTB LOGIC
SDO
SCK
PB7
PB6
PB5
SDI
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